I actually wonder the same. I wish I could answer this helpfully, but I have the same question. I will say, it's pretty easy to lift though. It doesn't seem like it would harm the screen. I actually relifted it to try to get dust off the screen and it was fine. Hope this helps.
By Allie on October 2, 2015
I purchased the ipad mini 4 glass protector and only one comes in the package. The other films that have two, are provided in case you botch your first install. I do not think that has anything to do with the longevity of the product.
By LindaFus on December 8, 2015
I used this screen protector for my IPad Generation 4. I am not sure about the IPad Air. The iPad Air uses a different case, so I do not think this protector will fit the air.
By sandra on September 9, 2014